Home / 109,459.49-151,048.23-61,709.76

Finding the Fourth Proportional to 109,459.49, 151,048.23 and 61,709.76

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Solution

The fourth proportional to 109,459.49, 151,048.23 and 61,709.76 is: 85,156.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,459.49 : 151,048.23 = 61,709.76 : x
  2. Step 2: Convert to fraction form
    109,459.49/151,048.23 = 61,709.76/x
  3. Step 3: Cross multiply
    109,459.49x = 151,048.23 × 61,709.76
  4. Step 4: Simplify right side
    109,459.49x = 9,321,150,021.72
  5. Step 5: Solve for x
    x = 9,321,150,021.72/109,459.49
  6. Step 6: Final answer
    x = 85,156.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.